verilog simulator

In a digital system, the information is often transformed into bits of binary code, because the data is processed using binary operations. In a logic circuit, the signal is output in the form of a high, low level. Encoder: The implementation of coded digital circuit, the input of each high and low level signal into a set of corresponding binary code. A 3-bit binary encoder with an input of 8 active high signals and an output code of the original code output is designed. Simplified logic express

language implementation　　With the above discussion, it is easy to implement a branch predictor using Verilog HDL.It is worth noting that only the saturation counter is incremented or decremented for non-overflow, and the highest bit of the count value is used to determine if a jump occurs, and 1 is taken,0 to not taken.1 ModuleBpu2 #(3 parameterPCW = -,//The width of valid PC4 parameterBTBW =Ten,//The width of BTB address5 )6(/*Autoarg*/7 //

Block symbol file--, suffix. BSF.Block design file--blocks the file, with the suffix. BdF.The BDF file is designed for the entire design, equivalent to a schematic diagram of the circuit, while the BSF file is implemented for one of the features in the design, equivalent to a component in the schematic diagram.By converting the Verilog HDL file into a BSF file and adding it to the BDF file, it facilitates the modular and visual design of the system.He

The Verilog ' include and C's include usages are the same, and the difference may lie in that point.Include is usually a file, for Verilog This file is nothing more than a few parameter definitions, soHere are a few more keywords: ' ifdef ' define ' endif (they all bring a point, hehe).They unite to use, really can make your program diversification, take the Brother VGA program say things.First, you can cre

1 , grammarStatement:parameter xx = yy;' Define XX YYUse:Xx' XX2 , ScopeParameter the file that acts on the Declaration, ' define reads from the compiler until the end of the compilation is valid, or the ' undef command invalidates it.If you want parameter or ' define to work on the entire project, you can write the following declaration in a separate file and use ' include to have each file contain a declaration file:' Ifndef XX' Define XX yy//or parameter xx = yy;' EndIf' Define can also be wr

Bcd:binary Coded Decimal is a 4-bit binary encoding that represents a 1-bit decimal number.Definition: BCD code This encoding form uses four bits to store a decimal digit, making the conversion between binary and decimal fast. This coding technique is most commonly used in the design of accounting systems, because the accounting system often requires accurate calculations of long numbers of strings. Relative to the general floating-point notation, the use of BCD code, both to preserve the accura

Many new amplitude statements are added to system Verilog, although they are only applicable to blocking amplitude, but are useful in some situations.Here's an interesting piece of code that covers a few uses.1 Package definitions;2typedef enum LOGIC [2:0] {ADD,SUB,MULT,DIV,SL,SR} opcode_t;3 typedef enum LOGIC {UNSIGNED, signed} operand_type_t;4 typedef union PACKED {5Logic [ at:0] U_data;6Logicsigned[ at:0] S_data;7 } data_t;8 typedef struct PACKED {

Write Verilog many times, should know oneself write code circuit structure is what appearance, the following analysis:Module TB ( input CLK, input rst_n, input de, output [11:0] cntx), Reg [11:0] cntx; Always @ (Posedge CLK or Negedge rst_n) begin if (~rst_n) cntx The circuit structure was seen with synplify:Circuit diagram of the Verilog adder and D flip-flops implemented togeth

Recently learning Verilog HDL language, think learn in doing is a better way to learn, so we have to directly analyze and analyze the code well.First a wave of code: 1 Moduleq_decode_38 (data_in,data_out);2 3 input[2:0] data_in;//Port Declaration4 Output[7:0] Data_out; 5 Reg[7:0] Data_out;6 7 always@ (data_in)8 begin 9 Case(data_in)Ten 3'd0:data_out = 8'b0000_0001; One

The iOS Simulator is a helper tool that can be used when developing a program on the iOS platform under Mac. iOS Simulator is part of the Xcode, Xcode is Apple's own iOS development program that can be downloaded for free! The IOS Simulator is located in the/developer/platforms/iphonesimulator.platform/developer/applications folder. Typically, you do not need to

Verilog Design AdvancedDate: May 6, 2014 TuesdayMain Harvest:1. Write the first Verilog program yourself.Topic:Using a 10M clock, a single-cycle shape such as the following periodic waveform is designed.Thinking:The first idea is to define two counters to count and two enable flags to control the two variables separately. But this logic is too complicated, search on the internet, or the definition of a coun

For the entire process, Modelsim does not open GUI mode with the Do file command line. When the simulation is finished, the waveform is seen with Debussy, and the speed is quite fast. Dare not to enjoy alone, to share with you all.Debussy and Modelsim Collaborative simulation of the whole process.1. Edit the Modelsim.ini file under the Modelsim root directory; Veriuser = Veriuser.sl replaced by Veriuser = Novas_fli.dll.2. Copy the Novas_fli.dll from the D:\Novas\Debussy\share\PLI\modelsim_fli54\

The difference between parameter (parameter) and define (macro definition) in Verilog Statement format Parameter xx=yy; (with semicolons)' Define XX yy (no semicolon) Function range The parameter is local and works only within the module that it defines, and the macro definition works on multiple files that are compiled at the same time. Even if a macro definition is specified inside a module, it still

wire), resulting in "y=next_x".2. Non-blocking assignment with When "xIn summary, the blocking assignment is performed on demand, and non-blocking assignment is performed in parallel.In Verilog programming, keep in mind the following eight principles:1) When the sequential circuit is modeled, it is assigned with a non-blocking value.2) When the latch circuit is modeled, it is assigned with a non-blocking value.3) The block assignment is used when bui

-Y, Ireset, ICLK87);88//Cr 596, 1033, 0Mac_3 U2 (IY, ICb, ICr,"h00254," h00409, "h00000,Ireset Z, ICLK94);95Endmodule//-------------------------------------------------Conversion formulaR = 1.164Y + 1.596cr-222.912G = 1.164Y-0.391CB-0.813CR + 135.488B = 1.164Y + 2.018cb-276.928Verilog syntax cannot handle floating-point data, the entire algorithm is zoomed in first and then zoomed out.Now the calculation of the left and right sides to enlarge 512 times times, equivalent to 2^9, that is, R >> 9 =

Verilog supports defining array parameters so that when the project is large, the code can be more concise when the module is instantiated: see examplesModule Dma_controller # (Parameter integer c0_max_mig_bl[3:0] = {2048,2048,2048,2048},Parameter integer c0_app_data_width[3:0] = {64,64,64,64},Parameter integer c0_dma_wr_data_width[3:0] = {16,16,16,16},Parameter integer c0_dma_rd_data_width[3:0] = {16,16,16,16},parameter [1:8*11] c0_read_write[3:0] =

The Implement screen block movement using Verilog Code is as follows: "'" Timescale 1ns/1ps//////////////////////////////////////////////////////////////////////////////////// Company://Engineer:////Create DATE:2017/05/12 20:29:36//Design Name://Module name:vga_test//Project name: Target Devices://Tool Versions://Description:////Dependencies:////Revision://Revision 0.01-file C reated//Additional Comments://///////////////////////////////////////

Recently began to learn Verilog HDL language, right on the hand there is a DE2 from the seniors borrowed an FPGA development board. Take advantage of the holidays to learn. Because there are some C-language basics, it is very fast to look at Verilog HDL syntax. The biggest difference between it and C is that the HDL language has a lot of module, and the module is a parallel relationship . But in some module

) T1 1 0 1 (The result of this signal is 1) (The level changes from low level to high level) T2 1 1 0 (The input pin has a high level and the input signal does not jump from low to high, then this signal results in 0) deduced:l2h_sig=l2h_f1 (! L2H_F2);10ms Delay module: 1. 10ms 10ms 1ms+10ms architecture, That is, the counter is used to produce the standard 1ms, Span style= "FONT-FAMILY:CALIBRI;" >1ms 10ms counter

What is different between%s and%0s? (%s and% 0 s)%s prints the string as it is with spaces at the begining if string contentsis less than string variable size.Whereas%0s supress printing spaces.(If the contents of the string are smaller than the size of the string variable, the%s will be preceded by a space when the string is printed, and%0s will not add spaces (string head print))Here's an example. Hope this helps!Code:Module test (); reg [10*8:0] str = "Hello"; Initial begin $display